<template>

  <a-layout>
    <a-layout-content
        :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >

      <p>
        <a-form layout="inline" :model="param">
          <a-form-item>
            <a-input-item>
              <a-input v-model:value="param.name" placeholder="名称">
              </a-input>
            </a-input-item>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="handleQuery({page: 1,size:pagination.pageSize})">
              查询
            </a-button>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add()">
              新增
            </a-button>
          </a-form-item>
        </a-form>

      </p>

      <a-table
          :columns="columns"
          :row-key="record => record.id"
          :data-source="ebooks"
          :pagination="pagination"
          :loading="loading"
          @change="handleTableChange"
      >

        <template #cover="{ text: cover }">
          <img v-if="cover" :src="cover" alt="avatar" />
        </template>

        <template v-slot:category="{  text,record }">
          <span>{{getCategoryName(record.category1Id)}} / {{getCategoryName(record.category2Id)}}</span>
        </template>

        <template v-slot:action="{ text,record }">
          <a-space size="small">
            <router-link :to="'/admin/doc?ebookId='+record.id">
            <a-button type="primary">
              文档管理
            </a-button>
            </router-link>
            <a-button type="primary" @click="edit(record)">
              编辑
            </a-button>
            <a-popconfirm
              title="你真的要删掉我嘛/(ㄒoㄒ)/~~"
              ok-text="绝情一删"
              cancel-text="我再想想"
              @confirm="handleDelete(record.id)"
              >
              <a-button type="danger">
                删除
              </a-button>
            </a-popconfirm>
          </a-space>
        </template>
      </a-table>
    </a-layout-content>
  </a-layout>

  <a-modal
      title="电子书表单"
      v-model:visible="modalVisible"
      :confirm-loading="modalLoading"
      @ok="handleModalOK"
  >
    <a-form :model="ebook" :label-col="{span : 6}">
      <a-form-item label="封面">
        <a-input v-model:value="ebook.cover" />
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value="ebook.name" />
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader
           v-model:value="categoryIds"
           :field-names="{ label: 'name' , value:'id', children: 'children'}"
           :options="level1"
        >
        </a-cascader>
      </a-form-item>
      <a-form-item label="描述">
        <a-input v-model:value="ebook.description" type="text" />
      </a-form-item>
    </a-form>
  </a-modal>

</template>

<script lang="ts">
import { defineComponent, onMounted, ref } from 'vue';
import axios from 'axios';
import { message } from 'ant-design-vue';
import {Tool} from "../../../util/tool";


export default defineComponent({
  name: 'AdminEbook',
  setup() {
    const param = ref();
    param.value = {};
    const ebooks = ref();
    const pagination = ref({
      current: 1,
      pageSize: 10,
      total: 0
    });
    const loading = ref(false);

    const columns = [
      {
        title: '封面',
        dataIndex: 'cover',
        slots: {customRender: 'cover'}
      },
      {
        title: '名称',
        dataIndex: 'name'
      },
      {
        title: '分类',
        slots: { customRender: 'category'}
      },
      {
        title: 'Action',
        key: 'action',
        slots: {customRender: 'action'}
      }
    ];

    /**
     * 数据查询
     **/
    const handleQuery = (params: any) => {
      loading.value = true;
      // 如果不清空现有数据，则编辑保存重新加载数据后，再点编辑，则列表显示的还是编辑前的数据
      ebooks.value= [];
      axios.get("/Ebook/service", {
        params: {
          page: params.page,
          size: params.size,
          name: param.value.name
        }
      }).then((response) => {
        loading.value = false;
        const data = response.data;
        if(data.success){
          ebooks.value = data.content.list;
          // 重置分页按钮
          pagination.value.current = params.page;
          pagination.value.total = data.content.total;
        }else{
          message.error(data.message);
        }
      });
    };

    /**
     * 表格点击页码时触发
     */
    const handleTableChange = (pagination: any) => {
      console.log("看看自带的分页参数都有啥：" + pagination);
      handleQuery({
        page: pagination.current,
        size: pagination.pageSize
      });
    };

    //----------------------表单------------------------
    /*
      数组，【100，101】对应：前端开发/Vue
    * */
    const categoryIds = ref();
    const ebook = ref();
    const modalVisible = ref(false);
    const modalLoading = ref(false);
    const handleModalOK = () => {
      modalLoading.value = true;
      ebook.value.category1Id = categoryIds.value[0];
      ebook.value.category2Id = categoryIds.value[1];

    axios.post("/Ebook/save", ebook.value).then((response) => {

      modalLoading.value = false;
      const data = response.data;

      //data==commonResponse
      if(data.success){
        modalVisible.value = false;
        modalLoading.value = false;

        //重新加载列表
        handleQuery({
          //记住，传进后端的是下面的这两个名字，一定要与PageRequest类里面的属性名一致
          page: pagination.value.current,
          size: pagination.value.pageSize,
        });
      }else{
        message.error(data.message);
      }
    });
  };

    /*编辑*/
    const edit = (record: any) =>{
      modalVisible.value=true;
      ebook.value = record;
      categoryIds.value = [ebook.value.category1Id,ebook.value.category2Id]
    };


    /*新增*/
    const add = () =>{
      modalVisible.value=true;
      ebook.value = {};
    };

    /*删除*/
    const handleDelete=(id :number) => {
      axios.delete("/Ebook/delete/"+id).then((response) => {

        const data = response.data;

        //data==commonResponse
        if(data.success){
          //重新加载列表
          handleQuery({
            //记住，传进后端的是下面的这两个名字，一定要与PageRequest类里面的属性名一致
            page: pagination.value.current,
            size: pagination.value.pageSize,
          });
        }
      });
    };

    const level1= ref();
    let categorys: any;
    /*
    * 查询所有分类
    * */
    const handleQueryCategory = () =>{
      loading.value= true;
      axios.get("/Category/all").then((response)=>{
        loading.value = false;
        const data = response.data;
        if(data.success){
          categorys=data.content;
          console.log("原始数组：",categorys);

          level1.value=[];
          level1.value = Tool.array2Tree(categorys,0);
          console.log("树形结构：",level1.value);

          //加载完分类后，再加载电子书，否则如果分类树加载很慢，则电子书渲染会报错
          handleQuery({
            //记住，传进后端的是下面的这两个名字，一定要与PageRequest类里面的属性名一致
            page: 1,
            size: pagination.value.pageSize,
          });
        }else{
          message.error(data.message);
        }
      })
    }

    const getCategoryName = (cid: number) => {
      //console.Log(cid)
      let result = "";
      categorys.forEach((item: any)=>{
        if(item.id === cid){
          //return item.name;//注意：这里直接return不起作用
          result = item.name;
        }
      });
      return result;
    };

    onMounted(()=> {
      handleQueryCategory();
    });

    return {

      param,
      ebook,
      ebooks,
      pagination,
      columns,
      loading,


      handleTableChange,
      add,
      edit,
      handleDelete,
      handleQuery,
      getCategoryName,

      modalVisible,
      modalLoading,
      handleModalOK,
      categoryIds,
      level1


    }
  }
});
</script>



